Disney's The Little Mermaid is an American animated television series produced by Walt Disney Television Animation based on the 1989 Disney film of the same name. It features the adventures of Ariel as a mermaid prior to the events of the film. This series is the first Disney television series to be spun off from a major animated film. Some of the voice actors of the film reprise their roles in the series, among them Jodi Benson as Ariel, Samuel E. Wright as Sebastian, Kenneth Mars as King Triton, and Pat Carroll as Ursula.

The Snorks is an animated television series produced by Hanna-Barbera which ran on NBC from September 15, 1984, to May 13, 1989. Although not as popular as the animated series The Smurfs, the program continued to be available in syndication from 1986 to 1989 as part of The Funtastic World of Hanna-Barbera's 3rd season, on USA Network in the late-1980s and early-1990s, on the BBC in the late 1990s, and from 2009–2011 and again from 2012–Present on Boomerang.

Deep down in the Pacific Ocean in the subterranean city of Bikini Bottom lives a square yellow sponge named SpongeBob SquarePants. SpongeBob lives in a pineapple with his pet snail, Gary, loves his job as a fry cook at the Krusty Krab, and has a knack for getting into all kinds of trouble without really trying. When he's not getting on the nerves of his cranky next door neighbor Squidward, SpongeBob can usually be found smack in the middle of all sorts of strange situations with his best buddy, the simple yet lovable starfish, Patrick, or his thrill-seeking surfer-girl squirrel pal, Sandy Cheeks.

Commanded by Captain Michael Murphy, Sealab is dedicated to the exploration of the seas and the protection of marine life. Among other things, the crew of Sealab faced such challenges as attacks from sharks and giant squids, potential environmental disasters, and threats to Sealab and marine life from shipping.

Marine Boy was one of the first color anime cartoons to be shown in a dubbed form in the U.S., and later in Australia and the United Kingdom. It was originally produced in Japan as Undersea Boy Marine by Minoru Adachi and animation company Japan Tele-Cartoons. It was sold outside of Japan via K. Fujita Associates Inc., with Warner Bros / Seven Arts Television handling worldwide distribution of the English-language version.

David Attenborough presents a documentary series exploring how animals meet the challenges of surviving in the most iconic habitats on earth.

Free Willy is an animated television series, inspired by the 1993 film of the same name. This television series was produced by Warner Bros. Television, Regency Enterprises and the Canadian company Nelvana for Warner Bros. Studios. The show, which aired for one season on American Broadcasting Company, continues the adventures of the orca Willy and Jesse, the boy who freed him from captivity as shown in the film. In retrospect, the series also anticipates multiple plot elements of the film sequel, Free Willy 2: The Adventure Home, released the following summer. The overarching conflict is reminiscent of Moby-Dick: a powerful oil baron, known to the main characters only as a cyborg called "The Machine" until the final episodes, loses his arm and part of his face to Willy while committing an environmental atrocity and wants revenge upon "that rotten whale... and his boy".

The Undersea Adventures of Captain Nemo was a series of five-minute cartoons produced in Canada in the mid-1970s. They told the story of Captain Mark Nemo and his young assistants, Christine and Robbie, in their nuclear-powered submarine, the Nautilus.

5000 years ago, the Triton Family was living peacefully in Atlantis until the Poseidon Family destroyed them all. Triton, of the Triton Family line, embarks on an adventurous life in the sea fighting the Poseidon Family.

Fish Police is a comic book series by cartoonist Steve Moncuse. The plot centers on law and crime in a fictional underwater metropolis with the protagonist, Inspector Gill, trying to solve various, often Mafia-related, crimes while avoiding being seduced by the buxom Angel Jones. The comic featured several marine species as its characters, while the plots and dialogue were reminiscent of film noir. Original Fish Police stories were published from 1985 to 1991, and featured the early work of Sam Kieth as inker.

The adventures of seven fish-tailed kids- Molly, Gil, Oona, Deema, Nonny, Goby, and Zooli!

The adventures of the Nekton family, a family of daring underwater explorers who live aboard a state-of-the-art submarine, The Aronnax, and explore uncharted areas of the earth's oceans to unravel the mysteries of the deep.

The adventures of a young shell named Shelldon who, together with his best friends Herman and Connie, boldly navigate their way through the underwater world of Shell Land, one lesson at a time.

Squid Girl has come to the land from the depths of the sea to conquer humanity in revenge for pollution of the ocean. Unfortunately she ruins the first house she uses as an invasion base and has to work to pay for repairs. Of course, she can't overcome the Aizawa sisters who manage the house, so who knows whether she can subjugate humankind.

In the early 21st century, mankind has colonized the oceans. The United Earth Oceans Organization enlists Captain Nathan Bridger and the submarine seaQuest DSV to keep the peace and explore the last frontier on Earth.

The Blue Realm is a natural history television series about amazing creatures of the sea. Utilizing superb High-Definition imagery, engaging stories, and leading marine scientists the series takes viewers on extraordinary journeys of discovery!

Join the crew of the Seaview aboard their super high-tech submarine, where no mission is too dangerous and no threat is too deadly, be it enemy agents, mad scientists, deadly sea creatures, or impending nuclear disaster.

Filmed over the course of a year, this three-part documentary follows those who live in one of the most extraordinary places on the planet, Australia's Great Barrier Reef.